import java.io.*;

public class CopyDemo3Buffered {
    public static void main(String[] args) throws IOException {
        FileInputStream fis=new FileInputStream("./src/f2357a12a6120c4b9940290b1b6d9ea0.jpg");
        BufferedInputStream bis=new BufferedInputStream(fis);
        FileOutputStream fos=new FileOutputStream("./src/copy.jpg");
        BufferedOutputStream bos=new BufferedOutputStream(fos);
        long start=System.currentTimeMillis();
        int d;
        while ((d= bis.read())!=-1) {
            bos.write(d);
        }
        long end=System.currentTimeMillis();
        long time=end-start;
        System.out.println(time+"ms");
        bos.close();
        bis.close();

    }
}
